Here is a poster on a middle school website. Going, Going, Gone ! The Haynes Middle School Parent Teacher Organization ifivites you to attend our latest fund (基金) -raiser, The Fourth Annual Haynes School Auction (拍卖) ! Saturday, May 10 6:00 pm--ll:00 pm in the school hall 6:00 pm--6:30 pm: All items for auction are previewed. 6:30 pm--7:00 pm: Silent auction begins. 7:00 pm--7: 30 pm: Highest bidders (出价人) from silent auction are determined. 7:30 pm--Il:00 pm: Main auction begins. Items up for bid in the silent auction range in value from $ 5.00 to $ 30.00. Items up for bid in the main auction include the following: ◆ Airline tickets to a place of your choice ◆ Weekend getaways at first-class hotels ◆ Season tickets to the Chicago Bears football game ◆ $ 50 gift tickets to local gift shops, restaurants, and salons ◆ Theater tickets to The Merchant of Venice Don’t miss the boat ! Book your tickets today. Last year, tickets sold out in five days ! Tick ets are sold on a first-come, first-served basis. $15.00 per person. All the money from the auction will be given to the Haynes School computer laboratory. The phrase "first-come, first-served" tells you that______.
A．people can buy the tickets on the first day only B．the person who is first to arrive will receive a ticket at no charge C．food and drink will be served at the auction D．tickets are sold in the order of who arrives first to buy them